I love the FaP and PaP puzzles and I usually like the PaP puzzles that use gray. I like the softness. However, one this week's PaP puzzles (00290100663) was extremely difficult to solve. There wasn't enough contrast between the brown and the gray and I had a hard time distinguishing between the two. The finished picture was nice, though.

We try to use color combinations which provide optimal contrast. However, this is not always easy without effecting the quality of the pictures. In addition, color contrasts are experienced differently by different users depending on eyesight, lighting conditions, screen type, color blindness and more.